Comparative assessment of crash causal factors and IVHS countermeasures
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1994-01-01
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Abstract:The National Highway Traffic Safety Administration’s Office of Crash Avoidance Research, in
conjunction with the Research and Special Programs Administration’s Volpe National
Transportation Systems Center, has underway a multi-disciplinary program to: identify crash
causal factors and applicable Intelligent Vehicle-Highway System countermeasure concepts,
model crash scenarios and avoidance maneuvers, provide preliminary estimates of countermeasure
effectiveness when appropriate, and identify research and data needs. To date, five crash types
have been examined which include rear-end, backing, single vehicle roadway departure, lane
change, and intersection/crossing path crashes. This paper describes the methodology employed
in analyzing crash scenarios and developing functional countermeasure concepts independent of
specific technologies. To illustrate that methodology, several steps in the lane change crash
analysis are presented. In addition, the causal factors of four subtypes of intersection/crossing
path crash problems are tabulated and functional countermeasure concepts are devised based on
a matrix of crash causes and subtypes. Finally, the causal factors of the five crash types
mentioned above are synthesized in separate categories dealing with the driving task, driver
physiological state, and the driving environment.
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